#!/usr/bin/python

import sys
"""
about
  http://en.wikipedia.org/wiki/ROT13
  http://www.miranda.org/~jkominek/rot13/
python version
  http://www.miranda.org/~jkominek/rot13/python/
online
  http://www.rot13.com/
"""
def main():
    #text = sys.stdin.read()
    text = """cebwrpg5 at bcrenznvy.pbz. Fcnz-serr! Cyrnfr qb abg hfr va choyvp cbfgf. V ernq gur yvfg, fb gurer'f ab arrq gb PP."""
    for x in range(len(text)):
	byte = ord(text[x])
	cap = (byte & 32)
	byte = (byte & (~cap))
	if (byte >= ord('A')) and (byte <= ord('Z')):
	    byte = ((byte - ord('A') + 13) % 26 + ord('A'))
	byte = (byte | cap)
	#sys.stdout.write(chr(byte))
	print chr(byte),

main()
